Portable knockdown seat-back.



J. L. AMANN. PORTABLE KNOOKDOWN SEAT BACK.

APPLICATION FILED SEPT. 6, 1904.-

PATENTBD JUNE 12, 195E UNITED STATES PATENT OFFICE.

JOSEPH LOUIS AMANN, OF CHICAGO, ILLINOIS. PORTABLE KNOCKDOWN SEAT-BACK Specification of Letters Patent.

'ratentea June 12, 1906.

Application filed September 6, 1904. Serial No- 228,618.

To all whom it may concern.-

. to be a full, clear, and exact description of the invention, such as will enable t ers skilled in the art to which it appertains to make and use the same.

My invention relates to a novel construction in a portable knockdown back for seats particularly ada ted for use in rowboats and the like, particu arly by fishermen and huntcrs, the object being to provide a li ht durable device of this character whic can be readily packed in a small space and carried in a vahse;. and it consists in the features of construction and combinations of parts hereinafter fully described and claimed. 7

In the accompanying drawings, illustrating my invention, Figure 1 is a fragmentary perspective view of a seat on which is mounted a back constructed in accordance with my invention. Fig. 2 is a perspective view of the back, showing same artlally folded.

Referring now to said drawin s, A indicates the seat of a row-boat or the ike, which consists generally of a thin fiat board. Secured at one end to said seat and resting thereon are two bars B, each of which is twisted between its ends, so as to lie partially flat upon the seat A and partially ed'gewise thereon, the free ends of the flat portions being each bent to form a hook C, the bill of which projects underneath the seat and carries a set-screw .D, by means of which the seat is clamped therein. Pivotally secured to the upturned portions of said bars B are two standardsE, the lower ends F of which are L-shaped and bifurcated to provide recesses G, 1n which the upturned portions of said bars B are received, said recesses being of the same or slightl less depth than the height of said upturne portions of said bars.

Said standards or osts E are pivotall secured to said bars y means of ins or liolts H, passing through the free en s F, so that when said posts or standards'are turned up the bottom wall of the recesses will form a stop to limit the rearward movement of said posts, and thus support the same against pressure exerted by a person leaning against the same. Secured to said standards is a a strip J of flexible material, such as canvas or duck, which receives the pressure of the back, and to hold said posts a predetermined distance a art I pivotally secure to each of them a bar IE, the free end of which is provided with a recess L, which is adapted'to receive and engage the shank of a button M on the other post or standard. The said bars B are twisted in relatively opposite directions and adjacent the pivots H, so as to rovide as little obstruction as ossible to t e free movements of the thig s of the occupant of the seat.

When not in use, turned down, as shown in Fig.2, and the bars B released from the seat. The crossbars K are then turned out of engagement with the buttons M and parallel with the posts, the latter being then rolled toward each other, and thus becoming partially wrapped in the flexible strip J in an obvious manner, and when thus folded the device will obviously occupy relatively very small space.

My said device is very simple and efficient.

1. A device of the kind specified, comprising two bars extending laterall over the seat and each rovided at one en with devices engagin t e forward end of the seat, osts or standards provided with bifurcate L- shaped lower ends and pivotally secured at the free ends of said L-shaped portions to said bars between the ends of the latter, the bottoms of the recesses in said L-shaped ends being adapted to rest u on the extreme free ends ofsaid bars and fiirming stops to limit the rearward movement of said posts or standards, a flexible strip secured at its 0 site ends to each of said posts, and cross ars pivotally secured at the r ends to one of said posts and removably en aging locking means on the other post to hol said posts in proper relative position.

2. A device of the kind specified, comprising two bars each provided at one end wlth a hook to receive one edge of the seat, said bars being adapted to rest upon the seat and being twisted between their ends so that their free ends rest ed ewise on the seat, two osts or standards eac having an Lshaped ower end pivotally secured at its free end to said free ends of said bars and having a recess to receive the latter, the elbow portions of said L-shape'd ends being adapted to rest upon said bars and forming stops to limit the relative movement of said bars and standards in one direction, a flexible strip secured at its the said posts E are 1 ends to said posts,

and cross-bars removably mounted on said posts or standards at one end and removably engaging interlocking devices on the opposite post at their free ends. 8. A device of the kind s ecified, comprising two bars each provide at one end with a hook to receive one edge of the seat, a setscrew mounted in the bill of said hook to enage and clamp the seat therein, said bars emg adapted to rest upon the seat and be ing twisted between their ends so that their free ends rest edgewise on the seat, two osts or standards each having an L-shaped ower end pivotally secured at its free end to said free ends of said bars and having a recess to receive the latter, the elbow portions of said fL-shaped ends being adapted to rest upon said bars and formin stops to limit the relative movement of said bars and standards in one direction, a flexible strip secured at its ends to said posts, and crossbars removably mounted on said posts or standards at one end and removably engaging interlocking devices on the opposite post at their free ends.

4. In a device of the kind specified, the

combination of two detached bars, each prov vided at one end with a hook toreeeige the edge of a seat, two posts having each an t.-

eaaiee' sha ed lower end, the extremities of the said L-s ped lower ends pro'ecting forwardly and being pivotally attac ed tosaid bars, and within the ends of the latter, the elbow portions of'said L-shaped ends resting on the upper edges-of said bars within the ends of t e same, a flexible strip connected at its ends to said post and cross-bars connecting said posts and detachable from one of the same.

5. 'Two bars twisted between their ends and provided with means for attaching them to a seat in such position that a portion of each bar will rest at on the seat and a portion of each bar will be vertical and bear at its lower edge on the seat, posts or standards provided with bifurcated t..-shaped lower ends and pivotally attached at the free ends of the L-s aped portions to'the vertical portions of said first-named bars and a flexible strip secured at its opposite ends to said posts. p 4

In testimony whereof I have signed my name in. presence of two subscribing witnesses.

JOSEPH LOUIS AMANN;

-Witne'sses Renown WM. Lora, l3. SonLorrELD. 

